Maybe both of us will be able to solve this problem 🙂 before support answers sometime 🙂
I tried everything and the send button is not active as well, although cron works, it doesn’t send my messages.
Normally all should be green:
https://snipboard.io/4zjAdD.jpg
And some stack when need to send bulletin – button send not active:
https://snipboard.io/WN9y2E.jpg
How is your button when preparing to send ?
Send button not active ?
https://snipboard.io/WN9y2E.jpg